Bevebage-ubn



W. F. CLARK.

BEVERAGE URN.

APPLICATION FILED 050.24, 1919.

Patented Sept. 6, 1921.

UNITED STATES PATENT OFFICE.

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PORATION O1 DELAWARE.

BEVERAGE-URN.

Patented Sept. 6, 1921.

Application filed December 24, 1919. Serial No. 847,239.

To all whom it may concern:

Be it known that I, WARREN F. CLARK, a

citizen of the United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented a certain new and usefulImprovement in Beverage-Urns,

of which the following is a full, clear, and exact description.

This invention relates to an urn construction, such as commonly used forthe preparation of hot beverages and maintaining them in heatedcondition after preparation.

The purpose of the present invention is to provide a construction bywhich there 1s obtained in the urn a circulation of heating water bywhich the beverage after being prepared is maintained in heatedcondition,

and held at the temperature at which .it is desired to maintain it, andfurthermore, the

construction is so arranged that the beverage may be prepared in the umand a circulation of the beverage liquor obtained simultaneously withthe heating thereof. Furthermore, the construction of the apparatus issuch that the heated water either in part or in whole which is used tomaintain the beverage in predetermined heated condition may be utilizedin the preparation of a fresh su ply of the beverage.

80 The urn whi h is shown and described is of a type particularlyadaptedv to serve as a coffee .urn, although no limitation is intendedin this particular, as obviously the principles of construction may beembodied 85 in urns adapted to handle other beverages.

Referring to the drawings, Figure 1 shows in part an elevation and inpart a sectional elevation of an urn embodying the features of theinvention; Fig. 2 is an elevation some- 4 what diagrammatic in nature,illustrating a pressure regulator by which the functioning of theheating element is controlled; Fig. 3 is a diagram showing certainelectrical connections where the urn is heated by electricity.

In the drawings, 1 represents a container which is of proper size andshape to hold a quantity of water necessary to immerse to a suitabledegree a second container 2 which is mounted within the container 1. Thecontainer 2 is supported within the container 1 and in the particularconstruction shown the container 1 is provided with an inwardlyextending flange or support 3 which engages beneath a flange or collar 4at the upper end of the container 2. The container 2 may be made of anysuitable material such as is now commonly used in the art, such asporcelain or a vitreous enameled metal con tamer.

The container 1 is provided with a cover 5 which serves to cover notonly the contamer 1 but the container 2. This cover bemg removable givesready access to the intenor of both of the containers mentioned.

Beneath the container 1 there is mounted a closed heating container 6.This heating contalner may be formed as a cylindrical pipe, the pipebeing lined with enamel where such is desirable. This container 6 isclosed at both its ends and at one end there is a pipe 7 which connectswith a T 8. From one portion of the T there is a pipe 9 which connectswith a valve fitting 10 and the valve fittlng connects with a pipe 11-which is connected with the low part of the beverage container 2.

The other end of the T 8 is connected with a pipe 12 which by means of asuitable elbow is connected with a valve 13 which in turn is connectedwith the interior of the container or reservoir 1 adjacent the lowerportion thereof as indicated at 14.

The opposite end of the heating container 6 to that which has just beendescribed, is

connected with a pipe 15 which at a portion thereof is provided with a T16, the T connecting with a valve 17 which valve is in.

turn connected with the interior of the container or reservoir 1 at apoint adjacent the upper part thereof, as indicated at 18. The T 16 isalso connected with a pipe 19 which communicates with a valve 20; fromthe valve 20 there is a pipe 21 which extends through the container 1and into the upper portion of the container 2. This pipe is providedwith a down spout 22 which may or may not be provided with a hood 23. I

Adjacent the lower end of the container 1 there is a pipe 24 which.communicates with the interior of the casing 1 and this pipe is providedwith a valve 25. Beyond the valve 25 is a pipe 26 which is adapted to beconnected with a source of water supply either the usual water supply ofa house or building or any other source of water supply.

Th heating container 6has an outlet pipe indicated at 27 whichcommunicates with the lowermost portion of the heating container 6. Thispipe is provided with a valve which in the present instance is shown asa faucet 28.

The heating container 6 may be heatedin any desired manner but in thepresent instance the container 6 is shown as heated by an electricresistance coil 29, which is wound around the outer wall of thecontainer 6 and extends substantially throughout the length of thecontainer. The coil 29 is incased or embedded in heat insulatingmaterial which is molded upon the container 6 as indicated at 30. Thecoil at its opposite ends connects with conductors 31 and 32 which areconnected with a source of electric current.

As will be well understood it is verg desirable and quite necessary tocontro the functioning of the heating coil 29 in such a manner as tosupply heat only at such times as it is necessary in order to maintainthe desired temperature of the fluid which may be circulating throughthe heating container 6. For this purpose, a pressure control element,which is generally. indicated at 33, is provided. This control elementforms no part of the present invention and only sufficient descriptionwill be given to explain the functioning thereof.

The control element embodies a Bourdon tube 34 which at the end 35thereof is connected with a tube 36. This tube extends through the wallof the container 1 so that at least a portion of the tube is immersed inthe fluid such as water which may be contained within the container 1:The tube is filled with a readily volatilized substance such as ether,and as will be readily understood, the condition of the other within thetube 36 reacts upon the Bourdon tube 34 to cause movement of the tube inaccordance with the pressure condition of the ether.

The Bourdon tube is provided with a pin 37. This pin extends beneath aflexible contact member 38 which contact member is adapted to coeperatewith another contact member 39. These contact members are suitablymounted and insulated from each other. The contact member 38 isconnected with the wire conductor 40, while the contact member 39 isconnected with the conductor 41. The conductors 40 and 41 as well as theconductors 31 and 32 are electrically connected with a relay, which isgenerally indicated at 42, which relay is in turn connected with asuitable source of electricity which may be indicated b the conductors43 and 44.

In Fig. 3 t ere is illustrated diagrammatically the electricalconnections between the conductors 40 and 41 and 31 and 32 and the relaydevice.

The relay device itself comprises essentiall a hollow coil 45 andext'ending through the ollow coil is a stem 46 WhlCh at its lower endcarries a-contact closing member 47. This contact closin membercoeperates with contacts 48 an 49. The heating coil which is associatedwith the heating container 6 is indicated at 29 in this diagram.

From the diagram it will be seen that the pressure control member 33,when'the contacts 38 and 39 are closed, permits a current to passthrough the coil 45, thus closing the contacts 48 and 49 of the relay sothat current may pass through the coil 29. When the Bourdon tube movesunder expansion, it separates the contacts 38 and 39, thus protectingthe flow of current through the member 45 and the member 47 moves to aposition to open the connection between contacts 48 and 49 of the relay,thus the flow of current to the heating coil .29 is interrupted.

The foregoing description of the pressure control 33 and the relay 42should be taken only as an illustration of one way in which the controldescribed may be effected.

In the usual operation of the device the beverage is contained Withinthe container 2 and is dispensed from this container by means of asuitable outlet which is not shown in the drawing. Surrounding thecontainer 2 there will be a body of water which is contained within thecontainer 1. This water is maintained in heated condition so as to keepthe beverage in heated condition and at the temperature at which it isdesired to dispense it.

f we assume that the beverage as prepard is within the container 2, thevalves 10 and 20 are closed and the valves 13 and 17 are open. Water .isintroduced within the container 1 through the pipes 26 and 24, which arecontrolled by the valve 25. When the desired amount of of water iswithin the container 1 the valve 25 is closed. Heat is then applied tothe heating container 6 and by convection the heated water will risethrough the pipe '15 and pass into the container 1 at the upper portionand simultaneously the cooler water at the lower end of the casing 1will circulate, through the ipe 12 and into the heatin container 6. T iscirculation of water w ich has just been described will be maintained aslong as heat is applied to the heating container 6 and in fact thecirculation will obtain as long as'convection currents may be set up dueto the difference in temperature of water in different parts of thesystem which has just been described.

The heating of the heating container 6 may be automatically. controlledwhether the heatin means be electricity as heretofore descri d orwhether it be some other form of heating means, but as the electricitysystem has been described, it will be seen t at the functioning of theheating coil 29 will be controlled by the pressure conditions within theether tube 36, so that the application of heat to the heating container6 will constructed so as to enable the making of the coffee in the urnitself. I

The coffee itself ma be introduced into the container 2 contained in abag or in an other manner, as is well known, and the va ve 17 is closedand the valve 20 opened. The valve is opened slightl g and the valve 13allowed to remain open. he heat is applied to the heating container 6and under these conditions thehot water whichis contained within thecontainer 1 will circulate through the heatin container 6, throu h thepipe 15, throug the pipe 21 and dischar e into the container 2. When thedc quantity of water has thus been d1S- sire charged into the container2, the valve 20 is closed and the valve, 17 is opened and the valve 25allowed to remain open until the desired quantity of water-is againintroduced in the container 1.

.As will be understood, in order to maintain the beverage within thecontainer 2 in a hot condition, the water which is within the container1 must be maintained in nearly boiling condition, so that the waterwithin the container-,1 is. in excellent condition for the making ofcoffee or any other beverage of that character.

After the uired amount of hot water has been intro uced into thecontainer 2, the valves 17 and 13 are closed and the valves 10 and 20are 0 ened. This causes a circulation of-liquor mm the container 2through the heating member 6 and heat may be applied to the heatingcontainer 6 so that this 11 uor is'heated to any desired degree.

By t e continued circulation of the liquor, such as coffee liquor, thestren h of the coffee is drawn from the ground ams and a coffee beverageof desired strength is pro duced. Y

Due to the circulatin feature and simultaneous heat of the verageliquor, and due to the fact that the hot water before used forheating'the container 2 is available for making the new supply ofbeverage,

such new su ply may be very quickly made and may be brou ht to desiredstrength in a short peri of time.

ve ll: will be seen therefore that the urn construction which has beendescribed is very complete in itself and doesnot, necessitate theseparate preparation of the beverage and its introduction into thebeveragecontainer.

Having described my invention, I claim:

1. An urn construction comprising a liquid container, a beveragecontainer associated with the container, a heating container, means forheating said heating container, conduits connecting the heatingcontainer at two points and connecting with the liquid container attwopoints whereby fluid may be circulated through the heating container andthe liquid container. 7

2. An urn construction comprising a liquid container, a beveragecontainer assoclated with the liquid container, a heating container,conduits connectin the heatin container at two points wit the liquicontainer at two points and the beverage container at two points, valvesassociated with the said conduits whereby there may be ob-' tained acirculation of fluid through the heating container and the beveragecontainer or the heating container and the liquid container,

3. An urn construction comprising a liquid container, a beveragecontainer, associ-' ated with the liquid container, a heating containerlocated beneath the li uid container, means for heating the sai heatingcontainer and conduits connecting the heating container with the li uidcontainer whereby a circulation of'fluid maybe obtained through theheating container and the liquid container.

4. An urn construction comprising a liquid container, a beveragecontainer associated with the first contamer, a heating container,conduits connecting the heating container and "the liquid containerwhereby a circulation of fluid may be obtained through the heatingcontainer and the liquid container, an electric resistance elementassociated with the heating container and means for controlling thefunctionin of said electric element in accordance wit the temperavturecondition of the liquid within the said container.

5. An urn construction comprising a liquid container, a beveragecontainer associated with the first container, a heating container,conduits connecting the heating container and the liquid container andthe beverage container, valves associated with said conduits wherebythere may be obtained a circulation of fluid through the heating container and the liquid container or through :the heating container andthe beverage container, an e1ectric heating element associated with theheating container and means for controllin the functionin of saidelectric heating e ement in accor ance with the tem rature condition oftheliquid within the iquid container.

In testimony whereof, I hereunto afiix my signature. v

- WARREN F. CLARK.

as I

